[GitHub] flink issue #6259: [FLINK-9679] Implement AvroSerializationSchema

[medcv]

Github user medcv commented on the issue:

    https://github.com/apache/flink/pull/6259
  
    @dawidwys 
    in last commit, I did extend `SchemaCoder` to have `getSchemaId` as you 
suggested.   


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